Upload via api skips elevation computation

[LucaSpadazzi]

Good morning,
I have a question about activity upload via api.

I have a TCX file built manually, thus not coming from a device like Garmin. This file contains elevation data (<AltitudeMeters>...</AltitudeMeters>).

If I try to upload this activity via api (https://www.strava.com/api/v3/uploads), the activity appears among my activities (https://www.strava.com/athlete/training), but shows an elevation of 0.

Using the web interface (+ >> Upload activity >> Choose file):
1) before clicking Save & View, the activity appears among my activities, without elevation
2) after clicking Save & View, the elevation appears and is correct.

It seems like the api call stops at step 1, and the elevation is missing. Is it possible to obtain the same result (steps 1 and 2) using apis? 

[LucaSpadazzi]

Thanks for your response. I tried both with the original device

<Creator>
  <Name>myrun</Name>
</Creator>

 and a custom device

<Creator>
  <Name>My Awesome Device with barometer</Name>
</Creator>

and in both cases the elevation appears with manual upload, but not with api upload.
This is my TCX:

<?xml version='1.0' encoding='utf8'?>
<TrainingCenterDatabase xsi:schemaLocation="http://www.garmin.com/xmlschemas/TrainingCenterDatabase/v2 http://www.garmin.com/xmlschemas/TrainingCenterDatabasev2.xsd" xmlns="http://www.garmin.com/xmlschemas/TrainingCenterDatabase/v2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns2="http://www.garmin.com/xmlschemas/UserProfile/v2" xmlns:ns3="http://www.garmin.com/xmlschemas/ActivityExtension/v2" xmlns:ns5="http://www.garmin.com/xmlschemas/ActivityGoals/v1"><Activities><Activity Sport="Biking"><Id>2023-04-16T16:44:29.000Z</Id><Lap StartTime="2023-04-16T16:44:29.000Z"><TotalTimeSeconds>609</TotalTimeSeconds><DistanceMeters>5053</DistanceMeters><Calories>193</Calories><Intensity>Active</Intensity><TriggerMethod>Time</TriggerMethod><Track><Trackpoint><Time>2023-04-16T16:44:29.000Z</Time><AltitudeMeters>0</AltitudeMeters><DistanceMeters>0</DistanceMeters><Cadence>0</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>0</Speed><Watts>0</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:30.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>0.0</DistanceMeters><Cadence>0</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>0.0</Speed><Watts>0</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:31.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>0.0</DistanceMeters><Cadence>0</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>0.0</Speed><Watts>0</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:32.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>0.0</DistanceMeters><Cadence>0</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>0.0</Speed><Watts>0</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:33.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>0.0</DistanceMeters><Cadence>704</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>0.0</Speed><Watts>0</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:34.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>3.0</DistanceMeters><Cadence>85</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>20.54</Speed><Watts>62</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:35.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>9.0</DistanceMeters><Cadence>85</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>20.54</Speed><Watts>62</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:36.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>16.0</DistanceMeters><Cadence>84</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>31.28</Speed><Watts>186</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:37.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>25.0</DistanceMeters><Cadence>84</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>34.73</Speed><Watts>248</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:38.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>35.0</DistanceMeters><Cadence>85</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>37.62</Speed><Watts>310</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:39.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>45.0</DistanceMeters><Cadence>85</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>37.71</Speed><Watts>312</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:40.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>45.0</DistanceMeters><Cadence>85</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>37.71</Speed><Watts>312</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:44:41.000Z</Time><AltitudeMeters>0.0</AltitudeMeters><DistanceMeters>66.0</DistanceMeters><Cadence>85</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:14.000Z</Time><AltitudeMeters>13.7</AltitudeMeters><DistanceMeters>855.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:15.000Z</Time><AltitudeMeters>13.8</AltitudeMeters><DistanceMeters>863.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:16.000Z</Time><AltitudeMeters>13.8</AltitudeMeters><DistanceMeters>863.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:17.000Z</Time><AltitudeMeters>14.2</AltitudeMeters><DistanceMeters>880.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:18.000Z</Time><AltitudeMeters>14.3</AltitudeMeters><DistanceMeters>888.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:19.000Z</Time><AltitudeMeters>14.5</AltitudeMeters><DistanceMeters>896.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:20.000Z</Time><AltitudeMeters>14.7</AltitudeMeters><DistanceMeters>904.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:21.000Z</Time><AltitudeMeters>14.8</AltitudeMeters><DistanceMeters>912.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:22.000Z</Time><AltitudeMeters>15.0</AltitudeMeters><DistanceMeters>920.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:23.000Z</Time><AltitudeMeters>15.2</AltitudeMeters><DistanceMeters>928.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:24.000Z</Time><AltitudeMeters>15.3</AltitudeMeters><DistanceMeters>936.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:25.000Z</Time><AltitudeMeters>15.5</AltitudeMeters><DistanceMeters>944.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:26.000Z</Time><AltitudeMeters>15.7</AltitudeMeters><DistanceMeters>952.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:27.000Z</Time><AltitudeMeters>15.8</AltitudeMeters><DistanceMeters>960.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:28.000Z</Time><AltitudeMeters>16.0</AltitudeMeters><DistanceMeters>968.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:29.000Z</Time><AltitudeMeters>16.2</AltitudeMeters><DistanceMeters>976.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:30.000Z</Time><AltitudeMeters>16.3</AltitudeMeters><DistanceMeters>984.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:31.000Z</Time><AltitudeMeters>16.5</AltitudeMeters><DistanceMeters>992.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:32.000Z</Time><AltitudeMeters>16.7</AltitudeMeters><DistanceMeters>1000.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:33.000Z</Time><AltitudeMeters>16.8</AltitudeMeters><DistanceMeters>1008.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:34.000Z</Time><AltitudeMeters>17.0</AltitudeMeters><DistanceMeters>1016.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:58.000Z</Time><AltitudeMeters>21.0</AltitudeMeters><DistanceMeters>1208.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:46:59.000Z</Time><AltitudeMeters>21.2</AltitudeMeters><DistanceMeters>1216.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:00.000Z</Time><AltitudeMeters>21.3</AltitudeMeters><DistanceMeters>1224.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:15.000Z</Time><AltitudeMeters>23.8</AltitudeMeters><DistanceMeters>1344.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:16.000Z</Time><AltitudeMeters>24.0</AltitudeMeters><DistanceMeters>1352.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:17.000Z</Time><AltitudeMeters>24.2</AltitudeMeters><DistanceMeters>1360.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:18.000Z</Time><AltitudeMeters>24.3</AltitudeMeters><DistanceMeters>1368.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:19.000Z</Time><AltitudeMeters>24.5</AltitudeMeters><DistanceMeters>1376.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:20.000Z</Time><AltitudeMeters>24.7</AltitudeMeters><DistanceMeters>1384.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:21.000Z</Time><AltitudeMeters>24.8</AltitudeMeters><DistanceMeters>1392.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:22.000Z</Time><AltitudeMeters>25.0</AltitudeMeters><DistanceMeters>1400.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:23.000Z</Time><AltitudeMeters>25.2</AltitudeMeters><DistanceMeters>1408.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:24.000Z</Time><AltitudeMeters>25.3</AltitudeMeters><DistanceMeters>1416.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:25.000Z</Time><AltitudeMeters>25.5</AltitudeMeters><DistanceMeters>1424.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:26.000Z</Time><AltitudeMeters>25.7</AltitudeMeters><DistanceMeters>1432.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:27.000Z</Time><AltitudeMeters>25.7</AltitudeMeters><DistanceMeters>1432.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:28.000Z</Time><AltitudeMeters>26.0</AltitudeMeters><DistanceMeters>1449.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:29.000Z</Time><AltitudeMeters>26.2</AltitudeMeters><DistanceMeters>1457.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:30.000Z</Time><AltitudeMeters>26.4</AltitudeMeters><DistanceMeters>1465.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:31.000Z</Time><AltitudeMeters>26.5</AltitudeMeters><DistanceMeters>1473.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:32.000Z</Time><AltitudeMeters>26.7</AltitudeMeters><DistanceMeters>1481.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:33.000Z</Time><AltitudeMeters>26.9</AltitudeMeters><DistanceMeters>1489.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:34.000Z</Time><AltitudeMeters>27.0</AltitudeMeters><DistanceMeters>1497.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:35.000Z</Time><AltitudeMeters>27.2</AltitudeMeters><DistanceMeters>1505.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:36.000Z</Time><AltitudeMeters>27.4</AltitudeMeters><DistanceMeters>1513.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:37.000Z</Time><AltitudeMeters>27.5</AltitudeMeters><DistanceMeters>1521.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:38.000Z</Time><AltitudeMeters>27.7</AltitudeMeters><DistanceMeters>1529.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:39.000Z</Time><AltitudeMeters>27.9</AltitudeMeters><DistanceMeters>1537.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:40.000Z</Time><AltitudeMeters>28.0</AltitudeMeters><DistanceMeters>1545.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:41.000Z</Time><AltitudeMeters>28.2</AltitudeMeters><DistanceMeters>1553.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX 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xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:45.000Z</Time><AltitudeMeters>28.9</AltitudeMeters><DistanceMeters>1585.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:46.000Z</Time><AltitudeMeters>29.0</AltitudeMeters><DistanceMeters>1593.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:47:47.000Z</Time><AltitudeMeters>29.2</AltitudeMeters><DistanceMeters>1602.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX 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xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:49:40.000Z</Time><AltitudeMeters>48.1</AltitudeMeters><DistanceMeters>2510.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:49:41.000Z</Time><AltitudeMeters>48.2</AltitudeMeters><DistanceMeters>2518.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:49:42.000Z</Time><AltitudeMeters>48.4</AltitudeMeters><DistanceMeters>2526.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:49:43.000Z</Time><AltitudeMeters>48.6</AltitudeMeters><DistanceMeters>2534.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:49:44.000Z</Time><AltitudeMeters>48.7</AltitudeMeters><DistanceMeters>2542.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:49:45.000Z</Time><AltitudeMeters>48.9</AltitudeMeters><DistanceMeters>2550.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:49:46.000Z</Time><AltitudeMeters>49.1</AltitudeMeters><DistanceMeters>2558.0</DistanceMeters><Cadence>86</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:49:47.000Z</Time><AltitudeMeters>49.2</AltitudeMeters><DistanceMeters>2566.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>30.04</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:49:48.000Z</Time><AltitudeMeters>49.4</AltitudeMeters><DistanceMeters>2574.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX 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xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>22.95</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:54:34.000Z</Time><AltitudeMeters>86.1</AltitudeMeters><DistanceMeters>5036.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>22.95</Speed><Watts>327</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:54:35.000Z</Time><AltitudeMeters>86.3</AltitudeMeters><DistanceMeters>5042.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>19.39</Speed><Watts>261</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:54:36.000Z</Time><AltitudeMeters>86.5</AltitudeMeters><DistanceMeters>5047.0</DistanceMeters><Cadence>87</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>15.4</Speed><Watts>196</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:54:37.000Z</Time><AltitudeMeters>86.6</AltitudeMeters><DistanceMeters>5051.0</DistanceMeters><Cadence>0</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>10.75</Speed><Watts>130</Watts></TPX></Extensions></Trackpoint><Trackpoint><Time>2023-04-16T16:54:38.000Z</Time><AltitudeMeters>86.7</AltitudeMeters><DistanceMeters>5053.0</DistanceMeters><Cadence>0</Cadence><Extensions><TPX xmlns="http://www.garmin.com/xmlschemas/ActivityExtension/v2"><Speed>5.58</Speed><Watts>65</Watts></TPX></Extensions></Trackpoint></Track></Lap><Creator><Name>myrun</Name></Creator></Activity></Activities></TrainingCenterDatabase>

[ibooij]

You can force/suggest Strava to use your elevation data by setting the right device type in the TCX file. See the section Device and Elevation Data on https://developers.strava.com/docs/uploads/

[ibooij]

You might need to add a namespaced attribute to the Creator

<Creator xsi:type="Device_t">
   <Name>something with Barometer</Name>
</Creator>

Otherwise somebody from Strava might want to give their 2 cents.

[Mike51]

I've the same problem, tried:

<Creator>
  <Name>My Awesome Device with barometer</Name>
</Creator>

And:

<Creator xsi:type="Device_t">
  <Name>something with Barometer</Name>
</Creator>

And: (which is the correct way according to https://www8.garmin.com/xmlschemas/TrainingCenterDatabasev2.xsd)

<Creator xsi:type="Device_t">
  <Name>something with barometer</Name>
  <UnitId>1234567890</UnitId>
  <ProductID>123</ProductID>
  <Version>
    <VersionMajor>0</VersionMajor>
    <VersionMinor>1</VersionMinor>
    <BuildMajor>1</BuildMajor>
    <BuildMinor>0</BuildMinor>
  </Version>
</Creator>

The activity gets uploaded but with no elevation. Same TCX uploaded from the web interface shows the correct elevation.

[ActivityFix]

There was a similar thread to this in the Strava API google group. Maybe something in there would be useful?

https://groups.google.com/g/strava-api/c/3QreDD1EWjQ/m/rCxRQ1ghAwAJ

[ibooij]

Sorry, then I'm out of options. Hopefully somebody from Strava can give an answer then.